python二维码库pyqrcode-0.2.1安装使用

http://www.oschina.net/p/pyqrcode

http://pyqrcode.sourceforge.net/

源码安装

Basically, you’ll need JCC, a Java Development Kit (JDK) for building the source code, and a Java Runtime Environment (JRE) for using the resulting python extension. Also, you’ll needGNU make,Python Imaging Library, Python setuptools and Python development files.

Instructions for Mac OS X 10.5:

1. • Download and install JCC
   

2. • Download and install Python Imaging Library
   

3. • All the others (including java) are already built in
   

Instructions for Ubuntu Linux 8.10:

1. • Install JCC
   

2. • Install Java JDK and JRE
   

3. • Install Python Imaging Library
   

4. • Install Python setuptools
   

5. • Install Python development files
   

6. • Take a look at the “notes” below
   

    $ sudo apt-get install jcc sun-java6-sdk python-imaging \

                           python-setuptools python-dev

Once the requirements are satisfied, you’re ready to get it to work. The Makefile has a couple of options, but the regular way also works fine.

    $ make && sudo make install

Building binary distribution of the pyqrcode python extension is also available. In order to generate the python egg, run the following command:

    $ make egg

The resulting python egg will be built in the dist sub-directory of pyqrcode’s source tree.

使用

pyqrcode 是 Python 的扩展用来生成二维条形码以及对二维条形码进行解码。

示例代码：

#!/usr/bin/env python
# coding: utf-8
# pyqrcode sample encoder

import sys, qrcode

e = qrcode.Encoder()
image = e.encode('woah!', version=15, mode=e.mode.BINARY, eclevel=e.eclevel.H)
image.save('out.png')

Make sure you have a Java Runtime Environment (JRE) compatible with the pyqrcode python extension installed on your system.

For encoding, you have a couple of options:

1. • width: integer (default 400)
   

2. • border: integer (default 10)
   

3. • version: integer, from 1 to 40 (default 5)
   

4. • mode: NUMERIC, ALNUM, BINARY or KANJI (default ALNUM)
   

5. • eclevel: L, M, Q or H (default L)
   

6. • case_sensitive: True or False (default True)
   

运行：

python test.py

遇到问题：

参考：http://stackoverflow.com/questions/3986011/qrcode-for-python-on-linux

Traceback (most recent call last):
  File "./test.py", line 5, in <module>
    import sys, qrcode  
  File "/usr/local/lib/python2.7/dist-packages/qrcode-0.2.1-py2.7-linux-x86_64.egg/qrcode/__init__.py", line 21, in <module>
    _qrcode._setExceptionTypes(JavaError, InvalidArgsError)

AttributeError: 'module' object has no attribute '_setExceptionTypes'

把__init__.py中的那一行注释掉即可